You can combine this mini expansion with the basic game as well as with all other expansions. First, you set up the game as usual. You shuffle all 16 bonus tiles and place them face down next to the game board. The stand-up figure Mammoth herd is placed next to the pile. You are now ready to start the game. The game play stays the same except for the following changes.

At the beginning of each round, the start player places the mammoth herd on the resource shown by the top-most bonus tile. For example, if the tile shows a brick, the start player puts the mammoth herd into the clay pit. Then, he/she picks the first bonus tile and places it face up next to the pile. (The resource that is now shown is of no importance in this round.) If there are no bonus tiles left, the whole herd is tamed. In this case, you remove the mammoth herd and continue playing according to the normal rules. You place your people as usual. Only in the phase in which you use the actions of your people figures, the mammoth herd becomes important. When you have people placed on the resource on which the mammoth herd stays, you roll the dice as usual and take your resources. Immediately after this, you may move one or more people from the resource where the mammoth herd is placed to the bonus tile that was turned over. With these people figures, you can try to tame a mammoth later in order to have help for your work. You are only allowed to move people figures from this resource production area, and you immediately have to pay 1 food for each people figure you place on the bonus tile. You may – as it is the case for feeding – substitute 1 food with 1 resource. People figures that are not placed on the bonus tile must be taken back to the player board. After all players have used the actions of their people, but before the feeding, you tame 1 mammoth from the mammoth herd.